Help 1998 Kawasaki Balius ZR250 (A) Cosmetic restoration

That was only to ~8000. The choke is a bit sticky and I was checking everything was working, but point taken.

 

Hey guys, I don't have a picture yet but I can't work out where the top tube coming out of the overflow tank goes to. The bottom pipe of the overflow tank goes to a valve near the radiator cap. I thought maybe the top one might just be a drain but it looks like it plug into something because it doesn't have the same road grime that the other drain pipes have and it has a pinch metal clip. Maybe it goes into the airbox and I haven't looked hard enough... I might take some pictures if you don't know what I mean

 

Thanks I thought as much.
My next questions. Is there an air relive valve in the coolant system? There seems to be one in the zxr but isn't in the same place in the zr

 

The Bikes off at road worthy. I'm a little worried about a couple things. But I'm sure it'll be ok.

 

Wowee: It passes almost as is. Just needed some new front brake pads.

 

Hey all, Sorry I haven't been on much lately. Been really busy outside this project. I feel like it's not been finished enough to take some 'final' photos. This is the latest https://goo.gl/photos/Hswo2Ey4UABoB3Bz7 I've just been trying to use it as a commuter bike but it's been a bit difficult lately.

The bike has been running really poorly lately. Idle dropping and engine dying frequently once it's warm. Once it dies it's difficult to get going again, usually waiting and trying a few times with the choke on/off, then bam. I ran some fuel system cleaner through it which made this slightly better. But before I go through it all. I thought it best to ask if it's worth just looking for a new motor. When I got this one I wasn't sure what condition it actually was in. I believe it needs at least a new Primary drive chain (possibly tentioners) and cam chains (it has two small cam chains and possibly tentioners for those as well). When running lots of chain noise from the motor, I tried resetting the tentioner and now the primary drive chain is a little quieter except near idle speed it seems to go, grindy -> grindy -> quiet -> quiet -> etc. The Tentioner has some slight indentations and smooth bits I believe from wear and tare.

When it is cold it starts up easily and idles ok (I have to keep the idle a little high to stop it from dying. (~1600rpm+ on the taco not sure if it's accurate). Once it's warm 20+ mins of riding the idle drops below 1500 frequently and it's difficult to keep it alive with the throttle or the idle adjuster on the carbs.

 

P.S. I'm not talking about the gearbox to wheel chain/sproket set. The noise and rough running seems to be internal to the engine/gearbox on both left and right side.

 

@GreyImport I've ordered a carb seal kit from litetek and plan to go through the carbs properly, like I should have done when they were off the bike in the first place. I was just a bit intimidated by their intricacy and four of them.

 

After jostling the Carbs around to get them off and drain them. The fuel in there came out light brown :S... I really should have done this the first time. fingers crossed I don't immediately need a new engine

 

I don't know where the fuel filter is on these. I might look at getting a tank sealant kit as well.

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Thanks for the help guys, heaps of chemicals and bits on the way to me, carbs are out, I'll let you know how it goes. One last thing I haven't seen much on setting the idle mixture screw on the ZR250, any tips/links?

 

I got my tank cleaning/sealing kit and the carb seal kit and the carb cleaner, this week should be a reasonably busy week. I'm pretty sure I don't have a fuel filter. Any idea what I should buy to slot in after the tank (presumably).